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mysnprintf.c: Massive rewrite of PyOS_snprintf and PyOS_vsnprintf, to

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use wrappers on all platforms, to make this as consistent as possible x-
platform (in particular, make sure there's at least one \0 byte in
the output buffer).  Also document more of the truth about what these do.

getargs.c, seterror():  Three computations of remaining buffer size were
backwards, thus telling PyOS_snprintf the buffer is larger than it
actually is.  This matters a lot now that PyOS_snprintf ensures there's a
trailing \0 byte (because it didn't get the truth about the buffer size,
it was storing \0 beyond the true end of the buffer).

sysmodule.c, mywrite():  Simplify, now that PyOS_vsnprintf guarantees to
produce a \0 byte.
This commit is contained in:
Tim Peters 2001-12-03 00:43:33 +00:00
parent 17d0154097
commit faad5ad590
4 changed files with 87 additions and 103 deletions
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5
Include/pyerrors.h
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@ -123,16 +123,11 @@ extern DL_IMPORT(PyObject *) PyErr_ProgramText(char *, int);
# define vsnprintf _vsnprintf
#endif
#ifndef HAVE_SNPRINTF
#include <stdarg.h>
extern DL_IMPORT(int) PyOS_snprintf(char *str, size_t size, const char *format, ...)
__attribute__((format(printf, 3, 4)));
extern DL_IMPORT(int) PyOS_vsnprintf(char *str, size_t size, const char *format, va_list va)
__attribute__((format(printf, 3, 0)));
#else
# define PyOS_vsnprintf vsnprintf
# define PyOS_snprintf snprintf
#endif
#ifdef __cplusplus
}